Well, the Sunburst 315 that I stumbled into at a liquidator store many moons ago, turned out to be one of the best investments I have ever made...I used it for a Veg light for awhile with the Phillips 4100K it came with, but when temps began to drop in the flower room in NOV I decided to give it a run in flower, so I picked up the Phillips 3100K bulb.
In a total of 17 g,al of soil, two well vegged plants, with enough branching to stretch the footprint to its max, and a little beyond really.... I yielded 15+ zippers...and a buncha larf for candy. This light is fantastic.
Needless to say, the CMH will remain in the flower room, as the few degrees of heat it adds in the dead of winter here in Da UP of MI, have benefited the rest of the room as well, which is generally lit with DIY LED....Im not one of those anti HID types, I believe in the right tool for the job. The CMH is a great tool for me now.
Last winter it ran too cold, and I was in the process of planning more builds to add flower space anyway, but the CMH is a winner, and will always have an area dedicated for its use in my rooms forever...